1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J2844_201301 AEROSPACE SURFACE VEHICLE STANDARD J2844 JAN2013 Issued 2011-02 Revi
5、sed 2013-01 Superseding J2844 FEB2011 R-1234yf (HFO-1234yf) New Refrigerant Purity and Container Requirements for Use in Mobile Air-Conditioning Systems RATIONALE This standard is being updated to add the requirements for certification according to SAE J2911. 1. SCOPE This SAE Standard applies to ne
6、w refrigerant used in motor vehicle passenger air-conditioning (A/C) systems designed to use R-1234yf, including belt and electrically driven compressors. Refrigerant for use in hermetically sealed, refrigerated cargo systems is not covered by this document. 2. REFERENCES 2.1 Applicable Documents Th
7、e following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (insi
8、de USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J639 Safety Standards for Motor Vehicle Refrigerant Vapor Compression Systems SAE J2099 Standard of Purity for Recycled HFC-134a (R-134a) and HFO-1234yf (R-1234yf) or Use in Mobile Air-conditioning Systems SAE J2911 Procedure for Cer
9、tification that Requirements for Mobile Air Conditioning System Components, Service Equipment, and Service Technician Training Meet SAE J Standards SAE J2844 Revised JAN2013 Page 2 of 6 2.1.2 AHRI (ARI) Publications Available from Air-Conditioning, Heating and Refrigeration Institute, 4100 North Fai
10、rfax Drive, Suite 200, Arlington, VA 22203, Tel: 703-524-8800, www.ahri.org. AHRI Standard 700-2006 with Addendum 1: Specification for Fluorocarbon Refrigerants 2.1.3 Compressed Gas Association Publications Available from Compressed Gas Association, 4221 Walney Road, 5th Floor, Chantilly VA 20151-29
11、23, Tel: 703-788-2700, . 3. PURITY SPECIFICATION The refrigerant referred to in this document shall fulfill the purity specification limits below, and shall be tested according to the normative methods of test described in AHRI 700-2006 and follow the detailed test procedures included in AHRI 700-20
12、08 Appendix C with modifications for R-1234yf when added to Appendix C of the AHRI 700 Standard. 3.1 Volatiles 3.1.1 Volatile Impurities Including Other Refrigerants 3.1.1.1 Method The amount of volatile impurities including other refrigerants in the subject refrigerant shall be determined by gas ch
13、romatography as described in Appendix C to AHRI Standard 700. 3.1.1.2 Limits The test sample shall not contain more than 0.5% by weight of volatile impurities including other refrigerants. 3.2 Other Impurities 3.2.1 Moisture shall not exceed 25 ppm by weight. 3.2.2 High boiling residue shall not exc
14、eed 0.01% by volume. 3.2.3 Particulates/solids shall be visually clean to pass. 3.2.4 Acidity shall not exceed 1 ppm as expressed in ppm by weight as HCl. 3.2.5 Air and other non-condensables shall not exceed 1.5% gas phase by volume at 23.9 C. 4. CONTAINER REQUIREMENTS AND IDENTIFICATION 4.1 Standa
15、rd valve outlet connection shall utilize the left hand thread, inch, 16 threads per inch ACME or CGA 166 fitting, FIGURE 1 and TABLE 1. The fitting shall not contain a core valve pin. 4.1.1 The left hand thread, inch, 16 TPI ACME fitting applies to HFO-1234yf (R-1234yf) refrigerant cylinders used fo
16、r only MAC system servicing. 4.1.1.1 HFO-1234yf (R-1234yf) service cylinders shall have a volume less than or equal to 23 liters (1400 in3). 4.1.1.2 HFO-1234yf (R-1234yf) industrial cylinders, cylinders with volumes exceeding 23 liters (1400 in3), shall comply with the fitting requirements specified
17、 by applicable transportation rules and laws. SAE J2844 Revised JAN2013 Page 3 of 6 ABCEFDR 0 . 0 3 i n ( 0 . 8 m m )FIGURE 1 - HFO-1234YF (R-1234YF) CYLINDER CONNECTION SCHEMATIC TABLE 1 - DIMENSIONS OF HFO-1234YF (R-1234YF) CYLINDER CONNECTION 0.500-16 ACME-2G-LH-EXT SI units English units Major D
18、iameter (A) 12.700 12.573 mm 0.5000 0.4950 in Minor Diameter (B) 10.858 10.707 mm 0.4275 0.4215 in Relief Diameter (C) 9.14 0.25 mm 0.360 0.010 in Bore Diameter (D) 4.78 0.05 mm 0.188 0.002 in Cutback (E) 4.1 0.25 mm 0.16 0.01 in Full Thread (F) 13.51 mm (min.) 0.532 in (min.) 4.2 DOT Identification
19、 R-1234yf (2,3,3,3tetrafluoro-1-propene). 4.3 Container external color for new refrigerant shall be white with a red band on the shoulder or top of the container to designate a Class IV flammable refrigerant. 4.3.1 The cylinder color shall not be used as the sole means of identification. Cylinders,
20、shipping containers, and packaging shall be labeled as shown in Section 6. 4.3.1.1 Containers shall meet DOT Title 49CFR requirements. 5. SHIPPING CARTON MARKING REQUIREMENTS 5.1 R-1234yf, 2,3,3,3 Tetrafluoro-1-propene 5.2 DOT Label Flammable gas CAS Number 754-12-1 5.3 Hazard class 2.1 SAE J2844 Re
21、vised JAN2013 Page 4 of 6 6. CONTAINER AND SHIPPING CARTON IDENTIFICATION REQUIREMENTS 6.1 Refrigerant meeting the requirements identified in this document shall be shipped in containers with a marking on the container and shipping carton. 6.2 The label or imprint marking shall be bold, having a min
22、imum height of 5 mm, and shall state: “Cylinder contents comply with purity requirements of SAE J2844.” 7. CERTIFICATION 7.1 In order to label any product(s) they shall meet SAE J2844, and the certification process as described in SAE J2911 must be followed and the documentation described in the app
23、endix shall be submitted to SAE 8. NOTES 8.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the doc
24、ument title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, or in documents that contain editorial changes only. PREPARED BY THE SAE INTERIOR CLIMATE CONTROL STANDARDS COMMITTEE SAE J2844 Revised JAN2013 Page 5
25、of 6 APPENDIX A - REQUIREMENTS FOR CERTIFICATION TO SAE J2911 For Compliance this Standard shall meet SAE J2911 Procedure for Certification that Requirements for Mobile Air Conditioning System Components, Service Equipment, and Service Technician Training. This Standard provides manufacturers, testi
26、ng facilities and technician knowledge requirement providers with a procedure of certifying compliance with the appropriate SAE standard. Only certifying to SAE J2911 allows those verifying compliance to advertise their product as “Certified to the appropriate SAE Standard”. Industry, interested par
27、ties and Regulatory agencies will have access to the SAE International public Web Site posting of the results in the official SAE database. The compliance information for this Standard J2844 shall be recorded, verified in Table A and supplied to SAE. The responsible Committee shall establish the req
28、uired certification information. TEST VERIFICATION TABLE A Requirement paragraph # Performance Requirement Certification Test Observed Value Test Organization Person verifying Date of Test results Comments 3.1.1.2 volatile impurities 3.2.1 Moisture 3.2.2 High boiling Point residue 3.2.3 Particulates
29、 3.2.4 Acidity 3.2.5 Non-Condensables SAE J2844 Revised JAN2013 Page 6 of 6 Manufacturer name: Refrigerant Trade name Lot number of refrigerant tested Request for certification to the following SAE Standard: Date evaluated/tested: Name and address of Certifying Test Facility Required Certificate att
30、ached, Yes No Name of Manufacturers Contact Address: Phone Number: Email: Approvals: The manufacturer/supplier declares that the information in this report is representative of refrigerant of series production. _ Name Title Date I certify that that this claim meets all requirements of SAE J2911 and SAE J2844 _ Printed name Title _ Signature of manufacturer contact authorized to sign claim _ Manufacturer contact (printed name) if different than above
